package com.wy.inter.document;

public abstract class AbstractDocument {
    public byte[] toText() {
        System.out.println("toText");
        return null;
    }

    public byte[] toWord() {
        System.out.println("toWord");
        return null;
    }

    public byte[] toPdf() {
        System.out.println("toPdf");
        return null;
    }

    public byte[] toHtml() {
        System.out.println("toHtml");
        return null;
    }
}
